Sunday, August 14, 2011

Oaths and hypothetical bias

http://www.sciencedirect.com/science/article/pii/S092180091100276X
Abstract: Results from experiments using an oath to eliminate hypothetical bias in stated preference valuation are presented. An oath has several potential advantages relative to other methods for reducing hypothetical bias. Our empirical results suggest that with an oath, mean hypothetical payments are not different from mean actual payments and that when controlling for experimental participants' characteristics using regression analyses, the oath eliminated hypothetical bias.
by T.H. Stevens, Maryam Tabatabaei and Daniel Lass; all of the Department of Resource Economics, University of Massachusetts, 216 Stockbridge Hall, Amherst, MA 01003, USA. Tel.: + 1 413 545 5714; fax: + 1 413 545 5853.
Ecological Economics via Elsevier Science Direct www.ScienceDirect.com
Article in Press, Corrected Proof; Available online 11 August 2011.
Keywords:
Stated preferences; Hypothetical bias; Experimental economics; Economic valuation

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